How to translate proper name that contain one diacritical mark?

Question

I'm currently writing an English report, and I have to include a street name in it. Unfortunately, this name includes a character that is not present in the English alphabet: an è. Every other letter is writable in English.

How should I translate this name? I know usually proper names don't have to change when translated from a language to another, but what about this special character? I wonder about it because someone who never learned French wouldn't know how to pronounce it. But if I replace it with an e, it won't sound the same.

For precision, people who will correct my work do speak French, so would be able to read it. But I ask for a potential future case of this problem.

Answer 1

If it is not in the dictionary (café is now just cafe in English, for example), leave in the diacritic. Non-French speakers are not going to know how to pronounce it anyway, and if a French speaker is reading it, you'll have spelled it correctly for them.

Answer 2

For a proper noun, one would still use the diacritical mark. However, if it is not for a proper name, and there is an Anglicized equivalent, I would use the equivalent.

The "MLA Sister Site" contains a guide for inserting diacritical marks using an English keyboard, specifically, it states the purpose of the list is to type non-English names.

Answer 3

Why not write it in the French way? You find a lot of words of French, Italian or German in English books.